During her research, Putman observed only two male rattlers tidying their stakeout spots. But other studies show that several other rattlesnake species apparently do the same. (See incredible photos of rattlesnakes.)

Rattlesnake vs. RatRattlesnakes are best known for the hiss of their famous tails. And this western diamondback rattlesnake catches its prey, a rat, with an ambush.

The nest of the Jerdon’s jumping ant includes a garbage chamber filled with dead ants and leftover prey, staffed by a “sewage crew” of maggots that “eat the refuse, thereby [preventing] it from clogging up the chamber,” Bert Hölldobler, a sociobiologist at Arizona State University, says via email. (Read about how ants maintain toilets in their nests.)